#include <iomanip>
#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <list>
#include <ctime>
const int NUM = 1000000;
using namespace std;
std::vector<int> vec_reader(const string& file_path, const int len) {
    std::ifstream in;
    in.open(file_path);
    vector<int>ans;
    if (in.is_open()) {
        for (int i = 0; i < len; i++) {
            int current;
            in >> current;
            ans.push_back(current);
        }
    }
    return ans;
}


std::list<int> list_reader(const string& file_path, const int len) {
    std::ifstream in;
    in.open(file_path);
    std::list<int>ans;
    if (in.is_open()) {
        for (int i = 0; i < len; i++) {
            int current;
            in >> current;
            ans.push_back(current);
        }
    }
    return ans;
}

class TimeLogger {
public:
    std::ofstream out;

    TimeLogger(const string& file_path) {
        out.open(file_path);
    }

    void reset() {
        current_time = time(0);
        frozen_time = time(0);
    }
    time_t get_ctime() {
        return current_time;
    }
    time_t get_ftime() {
        return frozen_time;
    }
    void set_ftime(time_t time) {
        frozen_time = time;
    }
    void log() {
        if (out.is_open()) {
            out << (time(0) - frozen_time);
            out.close();
        }
    }
private:
    time_t frozen_time;
    time_t current_time;
};

int main() {
    std::ofstream out;          // поток для записи
    out.open("Database.txt"); // окрываем файл для записи
    std::ifstream in;
    in.open("DataBase.txt");
    if (out.is_open())
    {
        for (int i = 0; i < NUM; i++) {
            out << rand();
            out << "\n";
        }
    }

    TimeLogger logger("Log.txt");
    logger.reset();
    logger.set_ftime(time(0));
    cout << logger.get_ftime() << "\n";
    vector<int>nums = vec_reader("DataBase.txt", 99999);
    nums.push_back(20);
    cout << logger.get_ftime() << " " << time(0);
    logger.log();

    return 0;
}